Datasheet Texas Instruments TPS5450DDARG4 — 数据表

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SLVS757D – MARCH 2007 – REVISED DECEMBER 2014 TPS5450 5-A, Wide Input Range, Step-Down Converter
1 Features 3 Description The TPS5450 is a high-output-current PWM
converter that integrates a low-resistance, high-side
N-channel MOSFET. Included on the substrate with
the listed features are a high-performance voltage
error amplifier that provides tight voltage regulation
accuracy under transient conditions; an undervoltagelockout circuit to prevent start-up until the input
voltage reaches 5.5 V; an internally set slow-start
circuit to limit inrush currents; and a voltage feedforward circuit to improve the transient response.
Using the ENA pin, shutdown supply current is
reduced to 18 ОјA typically. Other features include an
active-high enable, overcurrent limiting, overvoltage
protection and thermal shutdown. To reduce design
complexity and external component count, the
TPS5450 feedback loop is internally compensated. 1 Wide Input Voltage Range: 5.5 V to 36 V
Up to 5-A Continuous (6-A Peak) Output Current
High Efficiency Greater Than 90% Enabled by …